Re: Improper io_opt setting for md raid5

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To: Yu Kuai <yukuai1@xxxxxxxxxxxxxxx>
Subject: Re: Improper io_opt setting for md raid5
From: "Martin K. Petersen" <martin.petersen@xxxxxxxxxx>
Date: Mon, 28 Jul 2025 23:53:46 -0400
Cc: Damien Le Moal <dlemoal@xxxxxxxxxx>, Csordás Hunor <csordas.hunor@xxxxxxxxx>, Coly Li <colyli@xxxxxxxxxx>, hch@xxxxxx, linux-block@xxxxxxxxxxxxxxx, "James E.J. Bottomley" <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx>, "Martin K. Petersen" <martin.petersen@xxxxxxxxxx>, linux-scsi@xxxxxxxxxxxxxxx, "yukuai (C)" <yukuai3@xxxxxxxxxx>
In-reply-to: <9c6f300a-f78f-de6e-4b99-453df377c7ba@huaweicloud.com> (Yu Kuai's message of "Mon, 28 Jul 2025 15:14:20 +0800")
Organization: Oracle Corporation
References: <ywsfp3lqnijgig6yrlv2ztxram6ohf5z4yfeebswjkvp2dzisd@f5ikoyo3sfq5> <bdf20964-e1ee-45a9-bf24-3396e957ff67@gmail.com> <2b22f745-bbd5-4071-be9b-de9e4536f2d5@kernel.org> <6ab1be6e-380b-d4aa-dd71-f53373a66e29@huaweicloud.com> <655cb7e6-897a-4fab-a8ce-8832f2bc7274@kernel.org> <4767823c-2332-b3e1-67a6-2d7f55b48156@huaweicloud.com> <a1626eef-9846-4824-a899-2fbd8e369fac@kernel.org> <9c6f300a-f78f-de6e-4b99-453df377c7ba@huaweicloud.com>

> The orginal problem is that scsi disks report unusual io_opt 32767,

We should fix that. We already ignore a bunch of other oddball clues.

-- 
Martin K. Petersen

References:
- Improper io_opt setting for md raid5
  - From: Coly Li
- Re: Improper io_opt setting for md raid5
  - From: Csordás Hunor
- Re: Improper io_opt setting for md raid5
  - From: Damien Le Moal
- Re: Improper io_opt setting for md raid5
  - From: Yu Kuai
- Re: Improper io_opt setting for md raid5
  - From: Damien Le Moal
- Re: Improper io_opt setting for md raid5
  - From: Yu Kuai
- Re: Improper io_opt setting for md raid5
  - From: Damien Le Moal
- Re: Improper io_opt setting for md raid5
  - From: Yu Kuai

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